The makers of Injustice 2 have released concept art for a number of characters that didn’t not make the roster’s final cut. Despite having a large roster that included, not just DC heroes and villains, but also characters like Mirage Studios’ Teenage Mutant Ninja Turtles or Mortal Kombat’s Subzero, there will still additional characters that were under consideration and rejected.

Writer Marc Andreyko and artist Kevin Maguire are sending Supergirl across the universe, beginning in issue #22. The driving force behind this storyline will be her pursuit of the truth about Rogol Zaar and his connection to the death of Kara’s loved ones and the entire home planet.

Andreyko spoke with Newsarama about his plans for the storyline and the series overall.

Who murdered Krypton? Supergirl and Krypto rocket into space, en route to the Green Lantern world of Mogo, where she hopes to find clues about Rogol Zaar and his connection to the destruction of Krypton. Instead, she finds whispers…